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Finding the Fourth Proportional to 68,510.88, 94,530.24 and 40,209.12

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Solution

The fourth proportional to 68,510.88, 94,530.24 and 40,209.12 is: 55,479.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,510.88 : 94,530.24 = 40,209.12 : x
  2. Step 2: Convert to fraction form
    68,510.88/94,530.24 = 40,209.12/x
  3. Step 3: Cross multiply
    68,510.88x = 94,530.24 × 40,209.12
  4. Step 4: Simplify right side
    68,510.88x = 3,800,977,763.79
  5. Step 5: Solve for x
    x = 3,800,977,763.79/68,510.88
  6. Step 6: Final answer
    x = 55,479.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.